What is "mceachern"

McEachern and MacEachern are Irish and Scottish surnames. The names are Anglicised forms of the Gaelic Mac Eichthigheirn, meaning "son of Eichthighearn". The personal name Eichthighearn is composed of two elements. The first is each, meaning " horse"; the second is tighearna, meaning "lord". The surnames MacEachern and McEachern can be represented in Scottish Gaelic by MacEachairn, and MacEacharna.